Lock



Sept. 8, v1925 1,553,186

v. c. RUM-BERG LOCK Filed July 5, 1924 Paentedsept. S, 1925.

vIc'roR c. R'UMBERG, or' OGEMA, wrscu'JNsIN.

LOCK.

Application filed July 5,

To all 107mm t may @071.66m

Be it known that I, Vieron C. RUMBERG, a' citizen' of the United States, residing at Ogema, in' the county of Priceand State cfVisconsin, have invented a new and useful Lock, of which the following is a specification. Y

This invention aims to provide an exceedingly simple means whereby the bolt of a lock can be operated only by a person who` is acquainted with the construction of the lock, the lock being devoid of all of those complications which arise out of the use of permutation or combinationmechanisms.

It is within the province of the disclosure to improve generally and to enhance the utility of devices of that type to whichthe invention appertains.

Although a preferred form of the invention has been shown, it will be understood that a locksmith, working within the scope of what is claimed, Vmay make changes and alterations without departing from the spirit of the invention.

In the drawings'z-Figure 1 shows in elevation, a portion of a barrier whereunto the device forming the subject matter of this application has been applied; Figure 2 ris a section taken about on the line 2 2 of Figure l; Figure 3 is an elevation showing the lock case and attendant parts, the lid having been removed; Figure 4 is a perspective view showing the bolt; Figure 5 is a perspective view disclosing the yoke; Figure 6 is a perspective view wherein one end of the spindle appears.

The device forming the subject matter of this application comprises a casing which may be mounted on the outer surface of a door or other barrier, or be morticedy into the edge of the barrier. VThe construction last mentioned has been selected for illustration, but the manner of mounting the casing on the barrier is left to themechanic.

The numeral 1 marks a door or other barrier in which is mounted a casing 2, comprising a box-like body 3 and a lid 4, the lid being attached to the body ofthe casing by securingelements 5 engaged with lugs 6 within the body 3 of the casing. One end of the body 3 carries'a face plate 7 adapted to be secured in the usual way to the edge of the barrier 1. v

A bolt 8, having a beveled end 9, slides between the lugs 6 Vand projects through spindle 21,

vretract the bolt 8.

1924. serial No. 724,500.

an opening 10 in the face plate 7, the bolt being provided with diverging arms 11 having angular fingers 12 adapted to cooperate with the ends of a yoke 14 including a socket 15 provided: with an opening 16. The body 3 of the casing carries an abutment 17 Y which is secured at 18 to the body, the abutment carrying a compression spring 19 engaged in a longitudinal seat 20 in the locking bolt 8 and serving to advance the locking bolt.

The'nLumeral 21 marks a spindle extended through the barrier 1 and through the casing 2 the spindle being provided with a flattened side 22, through the opening the spindle extending 16 of the yoke 14, and the opening being so shaped as to cooperate with the fiat side 22 of the spindle-21 the construction being such that when the spindle is rotated, the yoke 14 will be rocked, to retract the bolt 8 in the usual way. A knob 23 may be secured at 24 to one end of the the knob 23 being located on the inside of the barrier or door 1. The opposite end of the spindle 21 is provided with an enlarged disk-like head 25. A knob 26 is located on the outside of the door 1 and is journaled for free rotation on the spindle, the knob 26 having a bore 27'for the reception of the spindle, and being provided in its outer end with a head of the spindle is received, the outer surface of the head 25 being flush with the outer end surface of the knob 26. The inner ends of the knobs 23 and 26 are journaled within collars 29 on finishing plates 30 secured at 31 to opposite rier 1.

When a person who is unacquainted with the construction of the lock attempts to operate the lock from the outside of the barrier 1, the* knob 26 merely rotates on the spindle and the yoke 14 does not operate to A person whois acquaintedhwith the operation of the device will grip the knob 26 between Vthe second linger and foreinger, the thumb being pressed against the head 25 of the spindle 21, Vthe knob 26 being bound against the head 25, and rotation being imparted to the spindle 21, the bolt 8 being retracted through the instrumentality of the yoke 14. The head 25 of the spindle 21 sets in flush with the outer end surface of the knob 26 and, to the eye of a casual observer, will recess 28 wherein theV surfaces of the barsuggest merely an ornamentation on the dle, and a knob freely rotatable on the spinknob, and not some part by which the lock dle, the head being located at the outer end may be manipulated. of the spindle and being so located with re- "What is claimed is zspect. to the knob that saidrpart may be 5 l. A device of the class described comengaged by the hand of an operator, When prising a rotatable spindle, a locking means the hand of the operator is on the knob. under the control of the spindle, and a knob 3. A device of the class described, conreely rotatable on the spindle, the spindle strncted as set itorth in claim 2, and further comprising an exposed part so located With characterized by the fact that the outer sur- 10 respect to the knob 'that said part may be ace of the head is approximately Hush With engaged by the hand of an operator, when the outer end surface of the knob, the knob the hand o't the operator is on the knob. having a recess wherein the head is received. 2. A device of the class described compris- In testimony that I claim the foregoing as ing a rotatable spindle having a head, a my own, I have hereto affixed my signature.

l5 locking means under the control o'l" the spin- VICTOR C. RUMBERG. 

